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137716 - An Improved Relative Permeability Model.pdf (5.29 MB)

An improved relative permeability model for gas-water displacement in fractal porous media

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journal contribution
posted on 2023-05-20, 11:29 authored by Wang, H, Wang, J, Xiaolin WangXiaolin Wang, Hu, B
Many researchers have revealed that relative permeability depends on the gas-water-rock interactions and ultimately affects the fluid flow regime. However, the way that relative permeability changes with fractal porous media has been unclear so far. In this paper, an improved gas-water relative permeability model was proposed to investigate the mechanism of gas-water displacement in fractal porous media. First, this model took the complexity of pore structure, geometric correction factor, water film, and the real gas effect into account. Then, this model was compared with two classical models and verified against available experimental data. Finally, the effects of structural parameters (pore-size distribution fractal dimension and tortuosity fractal dimension) on gas-water relative permeability were investigated. It was found that the sticking water film on the surface of fracture has a negative effect on water relative permeability. The increase of geometric correction factor and the ignorance of real gas effect cause a decrease of gas relative permeability.

History

Publication title

Water

Volume

12

Article number

27

Number

27

Pagination

1-24

ISSN

2073-4441

Department/School

School of Engineering

Publisher

MDPI

Place of publication

Switzerland

Rights statement

Copyright 2019 The Authors. Licensed under Creative Commons Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/

Repository Status

  • Open

Socio-economic Objectives

Environmentally sustainable energy activities not elsewhere classified

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